Senior Developer - Risk Technology

LevelUP HCS; Greater London; On-site; GBP 100,000 - 140,000; Full time

Job summary

LevelUP HCS is seeking a hands-on Senior Developer to build and operate a scalable, AWS-based risk platform. The role focuses on Python development with Snowflake data, aiming for high performance, reliability, and cost efficiency.

You will work on cross-asset risk reporting, market data integration, and distributed computation, collaborating with IT teams to ensure end-to-end risk delivery and supporting an on-call rotation.

Qualifications

• 7+ years of development experience in Python and C# .NET.
• Experience building pricing and risk management systems.
• Understanding of VAR, PNL, and risk metrics (delta, gamma, vega, etc.).
• Knowledge of market data (curves, surfaces, correlations).
• Familiar with CI/CD, testing (pytest), and observability tools.
• Strong distributed computing fundamentals and performance mindset.

Responsibilities

• Design, implement, and support scalable Python-based risk engines with Snowflake data.
• Optimize risk generation to deliver accurate results quickly.
• Improve distributed computation with efficient data structures and algorithms.
• Reconcile results with legacy risk systems and fix discrepancies.
• Investigate pricing and risk issues reported by risk management.
• Collaborate with internal IT teams for end-to-end risk delivery.
• Participate in an on-call support rota.

Skills

Python

C# .NET

Distributed computing

CI/CD

Unit testing (pytest)

Risk management systems

Data analysis

Education

Bachelor’s degree in CS/Engineering/Math

Tools

Snowflake SQL

AWS (EC2, S3)

Airflow/MWAA

Kubernetes / EKS / Lambda

Job description

The Risk Technology group builds and supports a global risk platform enabling the Risk Management group to oversee all areas of risk across the Firm. The risk platform provides capabilities for measuring, quantifying, analyzing, reporting, and controlling exposures across market and credit.

The Orchestration team is responsible for building and supporting a cloud‑based cross‑asset risk management platform. The system generates risk reports for tens of thousands of cash and derivative trades which risk managers use to assess exposure to movements in equity prices, interest rates, FX rates, volatility, and other market inputs. The system leverages a combination of external vendor and internally developed analytics libraries to handle curve and vol surface construction and pricing of trades.

We are seeking a hands‑on Senior Developer to build and operate a highly scalable, AWS cloud‑based risk platform leveraging a Snowflake database containing trade data, reference data, and market data needed to produce the firm’s risk. The majority of development is done in Python. The ideal candidate brings deep knowledge of distributed systems and data structures, and can optimize for performance, reliability, and cost.

Primary Responsibilities

• Design, implement, and support scalable Python‑based risk engines leveraging position, reference, and market data stored in Snowflake databases.
• Optimize the risk generation process to deliver accurate risk results in the least possible time.
• Optimize distributed computation using strong data structures and algorithms.
• Reconcile risk results produced by the new Orchestration platform with metrics from legacy internal risk systems to identify and correct trade breaks.
• Investigate pricing and risk issues reported by risk management.
• Collaborate with other internal IT teams to ensure a seamless end‑to‑end process for delivering risk.
• Participate in an on‑call support rota.

Essential Experience / Skills

• 7+ years of development experience, Python & ideally C# .NET.
• Experience building and supporting pricing and risk management systems for one or more of the following asset classes (in order of importance): equities, fixed income, credit, FX & commodities.
• Understanding of cash and derivative products and the risk measures for each (delta, gamma, vega, theta, rho, etc.).
• Understanding of the market data required to generate risk (yield curves, volatility surfaces, credit curves, correlation matrices, spot FX, etc.).
• Understanding of VAR, historical PNL vector generation, PNL generation, PNL attribution, custom risk scenarios, etc.
• CI/CD, unit testing (pytest), and observability tooling.
• Strong grasp of distributed computing.
• Bachelor’s degree, preferably in Computer Science, Engineering, Mathematics, or similar technical discipline.

Nice to Have

• Snowflake SQL expertise.
• AWS Cloud experience – including EC2 & S3.
• Airflow/MWAA or equivalent job scheduler experience.
• Kubernetes, EKS, Lambda, or serverless experience in AWS.

Personal Attributes

• Team player with strong analytical and problem‑solving skills, including the ability to troubleshoot and resolve complex pricing and risk issues.
• Strong verbal and written communication skills.
• Self‑starter and entrepreneurial in approach.
• Ability to elevate and follow‑up proactively.